多使用者作业系统商店申请作为metadata的许可。
Multiuser operating systems store file permissions as metadata.
最后导致系统的运行效率大打折扣，相当多的使用者都抱怨系统垃圾信息过多和运行速度缓慢，而且功能不齐全。
Finally led to the efficiency of the system compromised, a significant number of users complain about spam over and run the system slow and incomplete features.
最后导致系统的运行效率大打折扣，相当多的使用者都抱怨系统垃圾信息过多和运行速度缓慢，而且功能不齐全。
Finally led to the efficiency of the system compromised, a significant number of users complain about spam over and run the system slow and incomplete features.
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